Foam is great for keeping your beer cold and your fragile package safe, but it's not really the most advanced way to stay afloat. An inflatable vest like the Mustang Survival M. I. T. 100 Manual Activation PFD is far slimmer, lighter, and more breathable, but still has all the flotation power of a traditional foam vest. If you feel yourself going over the side, a quick tug on the handle will inflate the M. I. T.'s internal membrane, giving you 26lbs of buoyancy without interfering with your ability to swim or move freely. The 500D Cordura fabric is ultra tough, so it ensures the integrity of the membrane, and the clear window lets you check the status of the inflator so you're never caught unprepared. A single buckled webbing strap keeps the vest in place, and it's simple one fold design makes it easy to pack up and take with you every time you hit the water.